Before engaging in detailed analysis regarding the project’s research questions, we will first run general frequencies of SDPD stops to get a sense of overall trends. This helps us determine if our expected findings are likely to show up in the data and allows us to identify any trends we did not expect. The analysis will include:

General counts and percents of SDPD stops by key fields in RIPA data, e.g., stop reason, stop result, calls for service, race, age, searches, officer assignment.

General counts and percents of stops by Gang Suppression Unit and Special Operations Unit (if available) by key fields in RIPA data, e.g., stop reason, stop result, calls for service, race, age, searches.

Quick map of stop counts by police beat and for Gang Suppression Unit/Special Operations Unit.

SDPD Stop Level Exploration

SDPD Calls for Service versus Officer-initiated

Stop Counts and Rates by Response to Service Call

Call for Service

Total

Count

Percent

Average Stop Time (Mins)

Median Stop Time (Mins)

Min Stop Time (Mins)

Max Stop Time (Mins)

Total Time (Mins)

No

597,361

534,738

89.5

25.4

10.0

1

1,440

13,603,972

Yes

597,361

62,623

10.5

53.1

30.0

1

1,440

3,325,337

SDPD stops by stop reason

## 
##      1 
## 701063
Total and Rate of Stops by Stop Reason

Reason for stop

Total

Count

Percent

Reasonable Suspicion

679,019

337,579

49.7

Traffic Violation

679,019

310,160

45.7

Investigation to determine whether the person was truant

679,019

8,966

1.3

Known to be on Parole / Probation / PRCS / Mandatory Supervision

679,019

7,705

1.1

Knowledge of outstanding arrest warrant/wanted person

679,019

7,396

1.1

Consensual Encounter resulting in a search

679,019

7,170

1.1

Determine whether the student violated school policy

679,019

36

0.0

Possible conduct warranting discipline under Education Code sections 48900, 48900.2, 48900.3, 48900.4 and 48900.7

679,019

7

0.0

SDPD stops by stop result

SDPD stops by age

SDPD stops by race

SDPD stops that were searches and what searches resulted in (hit rates)

SDPD Gang Suppression Unit Comparisons

Count and rate of stops across different units

Total and Rate of Stops by Patrol Assignment Type

Patrol Assignment

Total

Count

Percent

Patrol, traffic enforcement, field operations

597,361

562,160

94.1

Other

597,361

16,355

2.7

Gang enforcement

597,361

7,633

1.3

Investigative/detective

597,361

4,414

0.7

Roadblock or DUI sobriety checkpoint

597,361

1,859

0.3

Task force

597,361

1,853

0.3

Special events

597,361

1,003

0.2

Narcotics/vice

597,361

973

0.2

K1-12 public school inlcuding school resource officer or school police officer

597,361

714

0.1

Compliance check

597,361

397

0.1

Gang Suppression Unit Calls for service versus Officer-initiated

Stop Counts and Rates by Response to Service Call from Gang Suppression Unit

Call for Service

Total

Count

Percent

Average Stop Time (Mins)

Median Stop Time (Mins)

Min Stop Time (Mins)

Max Stop Time (Mins)

Total Time (Mins)

No

7,633

7,491

98.1

26.2

15.0

1

1,440

196,349

Yes

7,633

142

1.9

87.4

60.0

1

720

12,411

Gang Suppression Unit stops by stop reason

Gang Suppression Unit stops by stop result

Gang Suppression Unit stops by age

Gang Suppression Unit stops by race

Map